38 The average score on a test of 40 students has a mean score of 53 and a standard deviation of 6. At least how many students were able to get higher than 65? * O 30 O 5 35 10

Q: Deviation of the scores of 40 ENGDATA students during their first quiz. 62 62 94 50 10 47 61 50 32…

A: Solution

Q: The mean of a population is 40 and its standard deviation is 3. What are the values ​​of the mean…

A: Given that  Mean=E(X)=40 Standard deviation=Std(X)=3 Variance=Var(X)=32=9

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: c) How many of the 15 data values fall within one standard deviation of the mean? Show how you found…

A: According to empirical rule, 68% of the data lie within 1 standard deviation of the mean.  Thus, if…

Q: b. Find the probability that a randomly selected acre in the forest has fewer than 28,814 ants. c.…

A: We have to find given probability...and quartile values..

Q: Of the 300 visitors polled,O liked to ski or snowboard. (Type a whole number.)

A:

Q: You are are running some stats on final game scores during March Madness games. The 16 teams that…

A: given data μ = 70.8σ = 12.4x = 80z = ?

Q: 5

A: The dependent t-test (called the paired-samples t-test) compares the means between two related…

Q: Consider the 5 numbers: 12, 5, 8, 12, 18. Which of the following is FALSE? The standard deviation is…

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Q: no handwriting please c) The amount of sodium sulfate, in mg, found in the soda follows a normal…

A: Given: Population meanμ=13Population standard deviationσ=2.5 Consider, X be the random variable that…

Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…

A: Given: n=25x¯=22.5σ=4.1α=0.01μ=24 The test hypothesis are, H0: μ = 24 H1: μ < 24. The hypothesis…

Q: C. Find the probability that a randomly selected district had fewer than 1994 votes for President…

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Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

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Q: How to find what numbers 89% lie between with a mean of 24 and a standard deviation of 4

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Q: 21. Which set of scores below has the smallest standard deviation? а. 11, 17, 31, 53 b. 5, 11, 42,…

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Q: c. Analyzing marks of 15 students from Spring 2020, you found their mean to be 23.6 and standard…

A: Data given Summer 2020  23,18,17,24,27,18,14,29  Spring 2020  n=15, x̄=23.6, s=4.9

Q: IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. a. What…

A: Given DataMean = 100Standard Deviation = 15

Q: Consider the following. 27, 6, 17, 16, 7, 3 Compute the population standard deviation of the…

A: Given data points are27, 6, 17, 16, 7, 3We have to compute the population standard deviation of the…

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: 36) Answer:- Given, The IQ scores (X) of adults are normally distributed with a mean of 100 and a…

Q: The data represent the number of days off per year for a sample of individuals selected from ten…

A: Solution

Q: Marks scored by Ahmed in Math course are 82, 90, 88 and 85. Calculate the Mean score. O a. 88 O b.…

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Q: Explain what the symbols d and so represent. What does the symbol d represent? A. The difference…

A: We have to identify where dbar and sd used .

Q: The mean IQ is 100 and the standard deviation is 15. What percentage of people fall between the IQs…

A: given  data, μ=100σ=15we have to find out the percentage of people

Q: On average, Americans have lived in 2 places by the time they are 18 years old. Is this average less…

A: Given Mean=2 x-bar=1.99 Standard deviations=0.3 n=62

Q: computer company daims that the employees' salary average = 5774 dollars. The standard deviation is…

A: Given data,μ=5774σ=722n=36x=5171test statistic (z)=?

Q: Using these reading scores  7, 7, 14, 9, 10, 8, 11, 14, 13, 14, 15, 15 and knowing the mean of the…

A: The data are 7, 7, 14, 9, 10, 8, 11, 14, 13, 14, 15, 15

Q: Give two sets of five numbers that have the same standard deviation but different means. Oset1: 2,…

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Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…

A: We have to identify null and alternate hypothesis.

Q: Scores on the Wechsler Adult Intelligence Scale for the 20 to 34 age group are approximately…

A:

Q: 1. Redwan took four tests in a class and had scores of 62, 65, 55 and 59. Find the mean deviation…

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Q: You are going to convert raw scores to z scores. The z scores are -2, -1, 0, +1, +2. The raw scores…

A: We have given that  X~N( mu, sigma^2) Z-score =(x- mu)/sigma

Q: What is the mean absolute deviation of the following scores: * Test Scores Stems Leaves 86.5 O 86 O…

A: The stem-and-leaf plot is given.

Q: You are given n = 5 measurements 2, 1, 1, 3, 5. Find the sample standard deviation

A: Given data : 2,1,1,3,5

Q: Here are the monthly wage scales of 8 workers from XYZ Knit Works. 15 13 18 12 21 13 26 22 a.…

A: Given : Monthly wage scale of 8 workers from XYZ knit works Sample size (n) =8  X 15 13 18…

Q: Based on various studies, it is known that the mean ACT-math score in America is 21 with a standard…

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Q: Given that the mean = 20 and the standard deviation o = 4, find P(x < 25).

A: Mean is 20 and the standard deviation is 4.

Q: The standard deviation of the scores: 2, 1, 1, 8 is 1.71 02 O2.92 O.8.5

A: The scores is 2,1,1,8sample size(n)=4